Centrifugal and turbine pump and the like



A. E( GULL.

CENTRIFUGAL AND TURBINE PUMP AND THE LIKE.v APPLlCATION FILED MAY 20, 1920.

llal 3,911 Patented Apr. 25V, 1922.

y' 2 SHEETS-'SHEET l.

n fl 4 Snom/Hoz A. E. GULL.

CENTHIFUGAL AD TURBINE P UIVIP AND THE LIKE.

APPLICATION FILED IIIIIY 2o, Iseo.

1,41 3,91 1, I Patented Apr. 25, 1922.

2 SHhETS-SHEET 2.

. WMM MW y tliiid being; puiiiped.

eer,te.,

ADoLr EWALD eULL, or Lennon; ENGLAND;

GENTRIFUGAL AND rnniainnrui'vir AND THE/mira."

Appiioation filed May 2o,

To all whom it may concern.'

, it ltnesvn that I, i-iooiiif EWALD `Guilin, a

citizenot the Republic o itzerland, residingat London, England, have invented neiv and useful Improvements CentriiL Turbine Pumps and the lileyoii which the following isa specitlcation. f l

This invention relates to rotary pumps, suchas. centrifugal, turbine, and the like pumps, in which a certain static or dynamic head or pressure is obtained by imparting` to a part et kthe fluid to be pumped a certain aniount'of kinetic energy by means or an internal iinpeller and transmitting this energy tothe Whole ot the tluid being pumped by means-ot jets er blades ot pressure-fluid issuing from and moving` bodily with a ring of rotating nozzles or other suitable apertures connected to or t'oiniingvpai't ot' the discharge chamber ofthe internal iinpeller, such j ets actingv simultaneously .as ejectors and as blades 'imparting tangential velocity to the ln order that ni'y invention may be readilyA understood. Vl will describe it with reference to the accompanying drawings, which illustrateoiiefivaj.' in which my invention may be carried out and in Which,

Figure l is a sectional elevation et' a pump embodying; my invention. -Y

Figure 2 a cross section line oit the 'discharge branch.v A

Figure S is a sectionv through the internal on the center 'blading ol the rotor, drawn to a larger scale.

Vigiire et a section through the nozzles ol the rotor; and

Figure 5 is a plan view of such a nozzle.

The 'roter n runs freely in the ,casing b which 'terms one large chamber, to Which and from which earl respectively the suction branch c and the discharge branch a?. This chamber is, however, cirided into anumber ot distinct aud Well deiined chambers or paf-@sages by the rotor, which is placed con-- fluid discharged through the S shaped chainfugal andV f yspecifimion'of Letters Patent. lPateiited Apr. 25,

i920. serial No. 383,022.A

beni?, the internal impeller shown iii-section in Fig. Thesuction of this impeller is. in the discharge chamber 0 of .the `puin-p,`

and may be protected Eby a strainer m.

, When the pump is working, a partfot the v Y fluid-to be pumped passes'through the rotor, the quantity being' determined by 'the size of the nozzles and the pressure created by the internal -impeller.- T he fluid is dra-Wn fromv the discharge chamber 0, and passed through the blading g-oithe internal impeller, which 7' imparts toit, .in theitorin of pressure, the energy; transmitted through the vshaft e;

Atteipassing; through the 555 shaped lchamber the `fluid' reaches the nozzles, Where its potentialenergy is transformed into kinetic energy'in the torni-of jetsvissuing rointlie rerolvingroter at a high'speedfand enteringthe cli-amber I' lt isfa `Well known 'factthat et' ot fluid, issuing .at a yhigh speed from an orifice, partalies ol the characteristics otra solid body,

iiiso liar. as itI possesses" great rigidity. Thus itfollows 'that ets issuingifrom apertures in a revolving` body tend to revolve asfa'Whole Y with such body. i The purpose of `inyrotor'is to create .jets @of this character. AIn orderxto impart to these jets Va blade-.like ornnthe apertures ofthe nozzles are formed as 'elon' gated'rectangles, shown in lFig. 5, the longer axisot theirectangle being parallel to the axis .of the shaft-" These blade-likej'ets,

revolving" With the rotor, impart tangential velocity to the Huid in the'chamber Z, and at the saine time ha vean ejeeting influence.v in

doing this the kinetic energy in the jets is imparted to the-Whole voluine` oit fluid pass-Y Y Whirl-chamber: It will be the speciicshape of these ing tl'irough the understood that fluid-blades will by the pressure against which thepunip is vWorking'. `but the poiver oi" the jets remains substantially constant, owing to the fact that "Y "10o the suction etv the internal iinpeller stands under the pressure of the discharge chamber. 1

in ojferatson the rotation el" the rotor causes'ifluid to Aflow into the interior ot' theH internal blades' g, linto the S shaped chamber 7L andis finally projected inthe term of blade likeA jets through the nozzles' at'high iioY velocit yThese 'ets are carried round vwith* i in each case be determined Y the rotor and as the same are spaced from each other Vthey form between them separate compartments .containing the fluid being pumped. This fluid is discharged onto the internal periphery of the casing in a substantially tangential direction. 1t is thus caused to pass out through t-he outlet el under a considerable pressure. t will be seen that the velocity of the streams issuing from the nozzles z' increases With the pressure on the discharge side of the pump so that the tendency of the blade like streams to bend rearwards under the discharge pressure is automatically counterbalanced to a certain extent by the increase in the Velocity of their discharge.l

What I claim is v l. .er centrifugal -pump comprising a casinghaying an inlet, and an outlet, an impeller rotatably mounted Within said casing, and a plurality of passages vWithin said impeller, each of Which has an outlet opening int-o 4the inlet side ot' the casinOn/Whereby part o' the fluid being pumped is caused to pass through said passages under the discharge pressure of the pump and be ejected into the inlet side of the casing by the impeller by reason or its rotation, said jets or blades'serying to induce fluid through the inlet of the casing and discharge the same through the outlet of the same.

2. A centrifugal pump comprising a casing having an inlet and an outletA therein,

Van impeller rotatably mounted Within said casing, said impeller having a plurality of passages extendingtherethrough, each passage'having an inletat one end and an out-.

let at the other end, said inletbeing disposedv on the discharge'or outlet side of the casing whereby part of the fluid being pumpedpasses through said passages undei1 the discharge -pressure of the pump and is cliected through the outletsof said passages in a radial direction as fluid streams of blade like form.

3. A centrifugal pump comprising a casing having an inlet and an outlet therein, a

Arotor rotatably mounted Within said casing,

ing having an inlet and an outlet openingl therein, the internal peripheral surfaceV ot' the casing expanding gradually from the inlet side to the outlet side of the same, a rotor rotatably mounted concentrically within said casing so as to separate the inlet openings, a plurality oi? passages'extending ',ransversely therethrough, each passage being olf volute Aiormand communicating with a common annular chamber of S 'formin cross section, inlets e'liecting communication between said volute passages and the dis-Av charge side oi the pump casing, outlets e'ffecting communication between the common annular chamber and the inlet side ot the pump 'i g, and nozzles in said outlets adapted to impart a jet or blade like 'form to the issuing fluid.

'In witness Whereo'l alliX -my signature.

Anous swam)einen. 

